Tension and waxing device for winding machines



G. E. GILBOS Jan. 10, 1967 TENSION AND WAXING DEVICE FOR WINDINGMACHINES Filed May 26, 1964 2 Sheets-Sheet 1 IN VE N TOP Geo ea'mz'elGilbas Z7 gzflxh W Jan. 10, 1967 G. E. GILBOS TENSION AND WAXING DEVICEFOR WINDING MACHINES Filed May 26, 1964 2 SheetsSheet 2 United StatesPatent 3,297,264 TENSION AND WAXING DEVICE FOR WINDING MACHINES GeorgesEmiel Gilbos, Aalst, Belgium, assignor to Constructiewerkhuizen GilbosP.V.B.A., Aalst, Belgium Filed May 26, 1964, Ser. No. 370,224 Claimspriority, application Belgium, Aug. 29, 1963, 42,929, Patent 636,742

9 Claims. (Cl. 242-35.6)

This invention relates to a combination tension and waxing device foryarn winding machine.

Among the objects of my invention are the provision of meansincorporated in a yarn winding machine and located between the supplybobbin and the winding drum guide for tensioning and waxing the yarnbeing wound and for catching the yarn upon being broken and retainingthe same until it is removed and tied.

Certain prior art tension and waxing devices of a well known type havethe disadvantage that upon breakage of the yarn, the suction means islikely to suck a double yarn end instead of a single end into theknotting mechanism because the yarn end may be caught in the waxingdevice. In such case, -a defect is introduced into the yarn.

In order to overcome the foregoing disadvantage I provide a tension andWaxing device formed of two separate members, one of which may be awaxing disk. Said members are in face to face engagement with each otherwith the yarn moving between the faces of said members during thewinding thereof. As soon as a break in the yarn occurs, one of themembers is automatically separated from the other to permit removal ofthe yarn which is again re-threaded between the members after tying ofthe yarn by the knotting mechanism is completed.

Another important feature of my invention resides in the fact that bothmembers of the tension and Waxing device are mounted on a common shaftand are driven in a direction opposite to that in which the yarn ismoving. This permits the yarn to be waxed and the tension of the yarn tobe adjusted as a function of the speed of the rotating members.

Other and further objects and advantages of my invention will becomeapparent from the following description when the same is considered inconnection with the accompanying drawings in which,

FIG. 1 is a front elevational view of a tension and waxing device inaccordance with my invention;

FIG. 2 is a cross-sectional view taken substantially on line 22 of FIG.1, and

FIG. 3 is a vertical cross-sectional view of a waxing disk.

The tension and waxing device of the present invention is shown in thedrawing in conjunction with a winding machine of which only sufficientstructure is illustrated for a clear understanding of the invention.

Referring to the drawing, the numeral 1 indicates the frame of a yarnwinding unit supporting an electric motor 2 having a shaft 3. Anextension shaft 4 having an axial bore is supported on shaft 3 and isprovided with a squared end portion 5. A disk 7 provided with a hollowhub portion is carried on shaft 4 and both shaft 4 and disk 7 are fixedto shaft 3 as by -a set screw 6. A hollow cylindrical member 8 has anend wall 8a, the central area of which is recessed and is provided witha square opening 8b arranged to receive the squared shaft end 5. Theopposite end wall 8c is provided with an enlarged opening 8d. Theannular marginal area of end wall 8a adjacent the periphery of themember 8 is adapted to engage against disk 7. A ring of suitableresilient material 25 is carried on shaft end within member 8 and awasher 26 is disposed contiguous to the ring. The

Patented Jan. 10, 1967 member 8 rotates with shaft 5 but is capable ofaxial sliding movement relative to disk 7.

A yoke 27 pivotally supported on a spindle 10 includes a pair of spacedL-shaped arms 9 each having a lateral leg 9a provided with a projection28. The ends of the lateral legs 9a pass through opening 8d and areadapted to engage against the washer 26 while the projections 28 areadapted to engage against the marginal annular area of wall 80. Acounter-weight 11 carried on the yoke 27 normally urges the yoke in acounter-clockwise direction so that the ends of the lateral legs 9a areurged against the washer 26. One of the arms 9 is provided with alateral tab 12 adapted to be engaged by a slideable pin 13. The pin isprovided with a collar 15 and a spring 14 circumposed about the pin 13abuts the collar 15 and the frame 1 and serves to bias the pin 13 in adirection out of engagement With tab 12.

The tension device includes a plurality of yarn guide bars 16 arrangedon opposite sides of the member 8 and a system of rods 17 which serve toretain the yarn in the event of breakage. A guide bar 18 is supported onone leg of an L-shaped arm 19 which is pivotally mounted on spindle 20,the other leg of said arm carries a series of graduated markings 21 forthe purpose of adjusting the yarn tension.

Referring to FIG. 3, a waxing member indicated by the numeral 22includes a hollow fiat cylindrical member 29 having a relatively largeopening 31 at one end and having a hub portion 32 with a relativelysmaller opening 33 at the other end. The hub portion 32 is provided witha peripheral groove in which is received a disk 34 which serves toanchor a generally cylindrical mass of wax 36 to the member 29. The waxmass is provided with a square opening 37 to receive the square shaft 5.

It will be understood that member 8 is intended to be replaced by a Waxmember 22 where waxing of the yarn is desired. In order to effectreplacement, it is only required that the legs 9 be flexed together toafford clearance for the projections 28 to pass through the openingThereafter, the yoke is swung clockwise, as viewed in FIG. 2, so thatthe member 8 may he slid off the shaft 5 and replaced by member 22,after which the arms 9 are again flexed to insert the projections 28Within the space of member 22.

Before operation of the Winding machine the yarn strand A from a supplybobbin, not shown, is threaded over the guide bars 16, adjustable guidebar 18 and is disposed between the member 8 and disk 7, as illustratedin FIGS. 1 and 2 of the drawings. It will be understood that member 8 ismoved away from disk 7 to afford entry of the yarn strand between theparts. If the yarn is to be waxed a waxing member 22 may be substitutedfor member 8 and is mounted in the manner hereinabove described.

While a yarn strand A is moving in the direction indicated by the arrowP, the disk 7 and member 8 or 22 are rotating in the direction, asindicated by arrow B in FIG. 1, this direction being opposed to thedirection of movement of the yarn strand. This provides the desiredtension for the yarn strand and insures thorough waxing of the yarnstrand when the waxing member 22 is used.

In the event of breakage of yarn strand A which may occur in the tensiondevice, the knotting mechanism of the Winding machine, not shown, iscaused to become operative to act on pin 13 to engage the projection 12so as to swing yoke 27 in a clockwise direction, as viewed in FIG. 2, toseparate member 8 or 22 from disk 7, thereby to release the yarn end.Correspondingly the suction nozzles of the thread finding meansassociated with the knotting mechanism suck the yarn end of the packagebeing wound and the released yarn end just mentioned into the knottingmechanism. Upon completion of the knotting operation the yarn strand isthreaded in the aforementioned manner and winding of the yarn isresumed.

Various changes coming within the spirit of my invention may suggestthemselves to those skilled in the art; hence, I do not wish to belimited to the specific embodifnents shown and described or usesmentioned, but intend :he same to be merely exemplary, the scope of myinven- :ion being limited only by the appended claims.

What I claim is:

1. A tension and waxing device for a yarn winding nachine adapted to belocated between a supply bobbin 1nd a winding drum guide of said machineand comprisng a rotatable shaft, first and second members mounted )nsaid shaft for rotation therewith and adapted to re- :eive a moving yarnstrand therebetween, said first memer being fixed on said shaft and saidsecond member )eing movable axially on said shaft relative to said firstnember, means normally biasing said second member nto engagement withsaid first member but being movlble to move said second member out ofengagement vith said first member, means for rotating said shaft tootate said members in a direction opposite to the direcion of movementof said yarn strand, and means adapted o be actuated by the knottingmechanism of said winding machine upon breakage of said yarn strand formoving aid second member away from said first member so as 0 releasesaid yarn strand whereby said yarn strand may e acted upon by saidknotting mechanism.

2. The invention as defined in claim 1 in which said econd memberincludes a waxing disk.

3. The invention as defined in claim 1 including guide vars adapted tobe engaged by the yarn strand, one of aid bars being rockably supportedand adapted for adjustug the tension on said yarn strand.

4. The invention as defined in claim 1 including a ystem of rods adaptedto retain a yarn strand upon reakage.

5. A tension and Waxing device for a yarn winding iachine adapted to belocated between a supply bobbin nd a winding drum guide of said machineand compris- Jg a rotatable shaft, first and second members mounted onsaid shaft for rotation therewith and adapted to receive a moving yarnstrand therebetween, said first member being fixed on said shaft andsaid second member being movable axially on said shaft relative to saidfirst member, means normally biasing said second member into engagementwith said first member but being movable to move said second member outof engagement with said first member, said biasing means including apivotally mounted yoke member engageable with said second member to movesaid second member axially on said shaft, means for rotating said shaftto rotate said members, and means adapted to be actuated by the knottingmechanism of said winding machine upon breakage of said yarn strand formoving said second member away from said first member so as to releasesaid yarn strand whereby said yarn strand may be acted upon by saidknotting mechanism.

6. The invention as defined in claim 5 in which one of said membersincludes a waxing disk.

7. The invention as defined in claim 5 in which said yoke memberincludes an element adapted to be engaged by the means actuated by theknotting mechanism to move said second member away from said firstmember upon breakage of the yarn strand.

8. The invention as defined in claim 5 in which the second membercomprises a hollow cylinder having a resilient disk engaged by the armsof said yoke member.

9. The invention as defined in claim 5 in which the means adapted to beactuated by the knotting mechanism includes a slideable pin norm-allybiased out of engagement with said yoke member.

References Cited by the Examiner UNITED STATES PATENTS 2,110,724 3/1938Goettel 118-78 2,235,229 3/1941 Lytton 118-78 2,997,017 8/ 1961 Steele11878 3,026,054 3/ 1962 Schweiter 24235.6 3,168,992 2/1965 Zollinger242-35 .5

FOREIGN PATENTS 808,067 1/ 1959 Great Britain.

STANLEY N. GILREATH, Primary Examiner.

1. A TENSION AND WAXING DEVICE FOR A YARN WINDING MACHINE ADAPTED TO BELOCATED BETWEEN A SUPPLY BOBBIN AND A WINDING DRUM GUIDE OF SAID MACHINEAND COMPRISING A ROTATABLE SHAFT, FIRST AND SECOND MEMBERS MOUNTED ONSAID SHAFT FOR ROTATION THEREWITH AND ADAPTED TO RECEIVE A MOVING YARNSTRAND THEREBETWEEN, SAID FIRST MEMBER BEING FIXED ON SAID SHAFT ANDSAID SECOND MEMBER BEING MOVABLE AXIALLY ON SAID SHAFT RELATIVE TO SAIDFIRST MEMBER, MEANS NORMALLY BIASING SAID SECOND MEMBER INTO ENGAGEMENTWITH SAID FIRST MEMBER BUT BEING MOVABLE TO MOVE SAID SECOND MEMBER OUTOF ENGAGEMENT WITH SAID FIRST MEMBER, MEANS FOR ROTATING SAID SHAFT TOROTATE SAID MEMBERS IN A DIRECTION OPPOSITE TO THE DIRECTION OF MOVEMENTOF SAID YARN STRAND, AND MEANS ADAPTED TO BE ACTUATED BY THE KNOTTINGMECHANISM OF SAID WINDING MACHINE UPON BREAKAGE OF SAID YARN STRAND FORMOVING SAID SECOND MEMBER AWAY FROM SAID FIRST MEMBER SO AS TO RELEASESAID YARN STRAND WHEREBY SAID YARN STRAND MAY BE ACTED UPON BY SAIDKNOTTING MECHANISM.